Implement basic crash detection and shutdown handling for out of process PPAP...

ppapi/proxy/host_dispatcher.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_PROXY_HOST_DISPATCHER_H_
 #define PPAPI_PROXY_HOST_DISPATCHER_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/process.h"
 #include "base/scoped_ptr.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/dispatcher.h"
 #include "ppapi/proxy/plugin_var_tracker.h"
 
+struct PPB_Proxy_Private;
 struct PPB_Var_Deprecated;
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace IPC {
 class SyncChannel;
 }
 
@@ skipping 13 matching lines @@
                  GetInterfaceFunc local_get_interface);
   ~HostDispatcher();
 
   // The host side maintains a mapping from PP_Instance to Dispatcher so
   // that we can send the messages to the right channel.
   static HostDispatcher* GetForInstance(PP_Instance instance);
   static void SetForInstance(PP_Instance instance,
                              HostDispatcher* dispatcher);
   static void RemoveForInstance(PP_Instance instance);
 
+  // Returns the host's notion of our PP_Module. This will be different than
+  // the plugin's notion of its PP_Module because the plugin process may be
+  // used by multiple renderer processes.
+  //
+  // Use this value instead of a value from the plugin whenever talking to the
+  // host.
+  PP_Module pp_module() const { return pp_module_; }
+
   // Dispatcher overrides.
   virtual bool IsPlugin() const;
 
   // IPC::Channel::Listener.
   virtual bool OnMessageReceived(const IPC::Message& msg);
   virtual void OnChannelError();
 
   // Proxied version of calling GetInterface on the plugin. This will check
   // if the plugin supports the given interface (with caching) and returns the
   // pointer to the proxied interface if it is supported. Returns NULL if the
   // given interface isn't supported by the plugin or the proxy.
   const void* GetProxiedInterface(const std::string& interface);
 
+  // Returns the proxy interface for talking to the implementation.
+  const PPB_Proxy_Private* GetPPBProxy();
+
  private:
   friend class HostDispatcherTest;
 
+  PP_Module pp_module_;
+
   enum PluginInterfaceSupport {
     INTERFACE_UNQUERIED = 0,  // Must be 0 so memset(0) will clear the list.
     INTERFACE_SUPPORTED,
     INTERFACE_UNSUPPORTED
   };
   PluginInterfaceSupport plugin_interface_support_[INTERFACE_ID_COUNT];
 
   // All target proxies currently created. These are ones that receive
   // messages. They are created on demand when we receive messages.
   scoped_ptr<InterfaceProxy> target_proxies_[INTERFACE_ID_COUNT];
 
+  // Lazily initialized, may be NULL. Use GetPPBProxy().
+  const PPB_Proxy_Private* ppb_proxy_;
+
   DISALLOW_COPY_AND_ASSIGN(HostDispatcher);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_HOST_DISPATCHER_H_